Case-knife.



.Y H. l .1, I EM mm\\\ m lm Patented May 8, |900 l nos; CASE KNIFE. v

(Applieation led Jan. 25, 1900.)

I b, H Q Q LLI b i f//f Lam/ffm@ @tbm/w34 No. 649,26l.

(No Model.)

UNITED ASTATES PATENT E'EreE.A

ISAAC ROSE, OF NEIVARK, NEIV JERSEY.

CASE-KNIFE.

SPECIFICATION forming part of Letters Patent No. 649,261, dated May 8, 1900. Application inea January 25,1900. sentira. 2,7oz. (Nomea-.1.)

To all wiz/0m tuna/y concern.-

Be it known that I, ISAAC RosE, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Case-Knives; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to ease-knives, and more particularly to the manner in which the blade of the knife is connected to the handle.

The object of the invention is to provide simple, durable, and inexpensive means for connecting the blade of a case-knife to its handle, whereby the blade will be prevented from working loose from the handle.

To this end the invention consists in certain features of construction and combination of parts, which will be hereinafter fully described and claimed.

In the accompanying drawings, Figure l is a side elevation of my improved knife, showing the handle in section. Fig. 2 is a crosssectional View on the line of Fig. I. Fig. 3 is a sectional view on the line y y of Fig. 2.

In the drawings the same reference charaeters indicate the same parts of the invention.

I denotes the blade of the knife, 2 its bolster, and 3 the screw-threaded shank or tang. fl denotes the handle, which consists of the hollow frame 5 and scales 6, which are su'pported upon the ledges 7 of the frame andsecured to the frame in any suitable manner. The forward end of the handle-frame is provided with a screw-threaded bore 8 to receive the tang or shank 3. Before the scales are secured to the handle-frame the shank or tang is screwed into the screw-threaded bore 8 until the bolster 2 abuts against the forward end of the handle-frame. That portion of the tang or shank within the handle-frame and immediately at the rear of the forward end thereof is now flattened or the threads thereof mutilated to form a shoulder and prevent the unscrewing of the blade from the handle-frame. secured to the handle-frame in any suitable manner. After this has been done the caseknife is complete.

From the foregoing description, taken in connection wit-h the accompanying drawings, the construction, operation, and advantages of my improved case-knife will be readily apparent without requiring an extended explanation. It will be seen that the device is simple of construction, that said construction permits of its manufacture at small cost, and that it is exceedingly well adapted for the purpose for which it is designed.

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is-

A case-knife comprising a hollow handleframe the forward end of which is provided with a screw-threaded bore, a blade having a bolster and a screw-threaded shank or tang, said shank or tang being screwed into the screw-threaded bore until the bolster of the blade abuts against the forward end of the handle-frame, the threads of said shank within the handle-frame immediately at the rear of the screw-threaded bore being mutilated or flattened to form a stop-shoulder to prevent the unscrewing of the blade, and scales secured to the handle-frame after said shoulder has been formed, substantially-as and for the purpose set forth. f

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ISAAC ROSE. Witnesses:

J. MoNIsH, Jr., JosEPi-I IIEATHCOTE.

The scale or scales are now 

